Kinda of an open ended question, right? Depends on your climate and the look you are trying to achieve. Pictures of the cabin would really help. The choice of finish depends on factors like décor, design, color coordination and the functionality of the finish in your weather climate.
I'm not that computer savy to post pictures but will tell you I am using Durations beige exterior paint on the primed t-111 the cabin was built with. It has a green metal roof. The cabin will be on top of a pasture field away from trees etc....It will be in sun when Sunny. I am in eastern Ohio. The pine wood includes window casing and around the top of the T-111 just beneath the roof. I just want to use something that will last and low maintenance.
I'd use a long oil (slow drying for good penetration) exterior rated oil based primer then 2 coats of a quality exterior semi-gloss in whatever color suits you. I've used Ben Moore Moorwhite for many years with excellent results on projects identical to yours.
If you haven't installed the wood yet, I recommend priming all surfaces of the wood before installation, including the cuts before you install it. Your trim will last much longer if you do. Also, especially for trim that is hard to reach I'd use cellular PVC (Azek is one brand) trim instead of wood. It works like wood, takes paint if you want something other than white and will not rot.